The small, hand-held model we associate with our pencil cases is known as a prism sharpener ... to cut down on further waste. Back in my day: What was school like in the 1940s?

Firstly, decide how many pencils or pens you want to fit in your pencil case (we chose 8). Then, lay out your felt or material and measure the length of the long side. Using a pencil, make a mark ...